Putin and Xi's claims of extending lifespan through repeated organ transplants have ignited scientific discussion.
Organ transplantation is a life-saving procedure for those with organ failure, significantly adding years to their lives.
However, using transplants for longevity in healthy individuals poses significant risks, including major surgery and immunosuppressant drugs.
Xenotransplantation, using pig organs, and the controversial creation of brainless bodies for organ harvesting are promising yet ethically complex advancements.